Nut-lock



S. BARBER. NUT LOCK.

APPLICATION FILED DEC. 5, I918- 1,?245028. Patented Dc.-9, 1919.

sHEn An nAnBER, on OAK PARK, ILLINOIS.

NUT-LOCK.

To all whom it may concern Be it known that I, SHERMAN BARBER, a citizenof the United States, residing in the city of Oak Park, county of Cook,and State of Illinois, have invented certain new and useful Improvementsin Nut-Locks, of which the following is a specification.

This invention relates to improvements innut locks and has among itssalient objects to provide a construction in which the nut lock has ineffect a double locking action on the nut; to provide a construction inwhich this double locking action is preferably obtained by springlocking action; to

provide a construction inwhich a double locking action can be obtainedfrom a single piece of metal, shaped and bent to the desired form; toprovide a construction in which one element of the locking members hasin effect a coil spring or helical spring action and the other a leafspring action; to provide a construction which can be formed from asingle piece of fiat metal shaped and bent in accordance with theinvention; to provide a construction which while securely locking thenut against working loose from the bolt, nevertheless does not interferewith the wrench action in removing the nut or turning it into place; toprovide a construction which can be readily and economicallymanufactured and in general to provide an improved construction of thecharacter referred to.

In the drawings,

Figure 1 is a cross sectional View of a rail joint;

Fig. 2 is a side elevation with parts broken away;

itself.

Fig. 4: is a View taken on lines 44: of Fig. 3 and looking in thedirection of the arrows.

In the particular construction shown in the drawings I have shown theinvention as used in connection with fastening rails by means of thefish plates, although it is to be understood that the invention is notlimited to any such use, but may be applied to wherever it is desired tolook a nut to a bolt or threaded rod except, it is to be understood thatthe nut lock must have a suitable support for the leaf spring actiontorest on.

Specification of Letters Patent.

Fig. 3 is a perspective View of the nut lock Patented Dec. 9, 1919.

Application filed December 5, 1918. Serial No. 265,321.

Referring to the drawings1 designates a railway rail, 2 and 3 the fishplates. The fish plates are secured to the rails by means of bolt 4:,which is provided with the usual nut 5. Between the fish plate 3 and theinner face of the nut 5 is interposed my improved nut lock designated asa whole 6. This nut lock 6 consists primarily of an annular split ringportion 7, a leaf spring member 8 and a connecting portlon 9.. The splitring portion 7 has its free end offset as shown at 10 which off setportion acts to bite'against or have locking frictional engagement withthe adjacent face of the nut. The leaf spring portion 8 has a centralconvex portion 11 and ends 12 and 13. The end 12 is connected to theintermediate portion 6 heretofore referred to. As shown 1n the drawings,the device is made from a single piece of flat metal and the split ringportion is bent so that the split ring portion lies vertical while theleaf spring portion has the metal lyingsubstantially horizontal or fiat.

The nut lock is operated as follows: After the bolt is inserted inplace, the split ring portion 7 is inserted over the threaded end of thebolt so that the leaf spring rests on the horizontally inclined portionof the fish plate as shown clearly in Fig. 1. This portion of the fishplate, last referred to, merely serves as a support for the leaf spring.The

- nut is now threaded on the bolt. As the nut is turned it will forcethe convex portion of the leaf spring downwardly sufliciently to permitof the nut being turned by the wrench, but will at the same time preventthis convex portion of the leaf spring working loose. As the nut engagesthe split ring portion, it will force the off set portion 10 ack, thearrangement being such that this off set portion 10 has a springgripping and shape t a convex'leaf o aiford helical springaction,

spring portion extending sub stantially at right angles to the ringportion, V 5 a portion connecting the leat spring and split ringportions.

2;A nut l ock consisting of an annular split ring portion having anoflset extension and shaped to afford helical spring action, a leafspring portion at an angle tothe ring 1 portion, a portion connectingthe leaf spring and split ring'portions, and all of saidvpor-g vtions'being formed;- of a single piece of metal;

SHERMAN BARBER. V I

